/* Layout — Grid, Flexbox, Container */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--wide {
  max-width: var(--container-wide);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* Section spacing — generous vertical rhythm */
.section {
  padding: var(--space-5xl) 0;
}

.section--sm {
  padding: var(--space-3xl) 0;
}

.section--lg {
  padding: var(--space-6xl) 0;
}

.section--dark {
  background-color: var(--color-bg);
}

.section--light {
  background-color: var(--color-bg-white);
}

.section--offwhite {
  background-color: var(--color-bg-offwhite);
}

.section--alt {
  background-color: var(--color-bg-alt);
}

.section--border-top {
  border-top: var(--border-accent);
}

.section--border-bottom {
  border-bottom: var(--border-accent);
}

/* Gradient separator between sections */
.section--gradient-top::before {
  content: '';
  display: block;
  height: 1px;
  background: var(--gradient-separator);
  margin-bottom: var(--space-5xl);
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid--6 {
  grid-template-columns: repeat(6, 1fr);
}

/* Two-column with sidebar */
.layout-sidebar {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-2xl);
}

.layout-sidebar--reverse {
  grid-template-columns: 1fr 300px;
}

/* Flex utilities */
.flex {
  display: flex;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.flex--column {
  flex-direction: column;
}

.flex--wrap {
  flex-wrap: wrap;
}

.flex--gap-sm {
  gap: var(--space-sm);
}

.flex--gap-md {
  gap: var(--space-md);
}

.flex--gap-lg {
  gap: var(--space-lg);
}

.flex--gap-xl {
  gap: var(--space-xl);
}

/* Text alignment */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* Visibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Responsive grid */
@media (max-width: 1024px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--6 {
    grid-template-columns: repeat(3, 1fr);
  }

  .layout-sidebar,
  .layout-sidebar--reverse {
    grid-template-columns: 1fr;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .section--lg {
    padding: var(--space-4xl) 0;
  }
}

@media (max-width: 768px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .grid--4 {
    grid-template-columns: 1fr;
  }

  .grid--6 {
    grid-template-columns: repeat(2, 1fr);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  .section--lg {
    padding: var(--space-3xl) 0;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .grid {
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .grid--6 {
    grid-template-columns: 1fr;
  }
}